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XFX 4850+ Crysis = underscan?

B

bunyip

n00b
Joined
Apr 28, 2008
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I finally upgraded to a card that can handle modern games well and bought an XFX Radeon 4850. I have a 1080p monitor with HDMI input and use a DVI to HDMI cable.

When I first set everything up, it was set to have a 5% underscan (black bars on the top, bottom, left, and right with a flickering image in the middle). Apparently this was because the card thought it must be connected to a television or something.

I went into the Catalyst Control Panel, turned it down to 0%, problem solved...

Except when playing Crysis. As soon as I go to 1080p fullscreen, the 5% underscan comes back. If I tab out to try to adjust CCC settings, it goes away. If I play Crysis at any resolution other than 1920x1080, this does not happen. 1920x1080 at non-fullscreen is also fine.

Every other game is fine as well. Street Fighter IV, TF2, Section 8 beta all work fine at 1080p fullscreen... it's just Crysis that's being weird about this. Any ideas about how to correct this?

BTW I couldn't be happier with my XFX 4850, should have upgraded sooner. Runs Crysis on high settings, idles at 46c, only reaches 68c at full load, the XFX cooler design is excellent. My last card (single slot 8800GS) had higher idle temps than my current load temps.
 
This has been going on for months. I wonder which genius thought up this "feature."
 
DX10 + 1080p ATI cards underscan. I have not been able to fix this problem and it is EXTREMELY annoying.
 
Have to disable DX10 if you want to get around it. I have the same issue on my 42" TV / Monitor. The screen doesn't need overscan or underscan but when I go into DX10 some annoying underscan is forced.
It is only on certain resolutions though. Try 1680x1050. Of course when I restart my games I usually have to change to another resolution then come back to 1680x1050 to have it work again.
I know it is non native and even stretched, but that is the highest functional resolution I have found.
 
I think I found a solution for this problem, I got Crysis working DX10 fullscreen no underscan on my HDTV With HDMI cable. You have to set GPU scaling and have it match screen size and uncheck 24Hz from the HDTV list.

My GPU is different, a HD 5770 but you can still give it a try

I made a video Showing How here: http://www.youtube.com/watch?v=5dvvWGMwX2Q
 
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